Chemistry: how does the reaction demonstrate the laws of conservation of charge and conservation of nucleon number?

What elements have 2 electrons inthe 4s sublevel

Based on the law of conservation of energy, which statement is false? answer- energy is lost when machines dont work right

Which sentence best describes the formation of igneous rock? a- lava on the surface dries up and makes arock b_melted rocks cools and forms crystals c_rocks under tremendous heat and pressure d_magma is melted rock underground